کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1649021 1007571 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Green synthesis of silver nanoparticles using marine polysaccharide: Study of in-vitro antibacterial activity
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Green synthesis of silver nanoparticles using marine polysaccharide: Study of in-vitro antibacterial activity
چکیده انگلیسی

The present contribution deals with one pot method for synthesis of silver nanoparticles through green route using sulfated polysaccharide isolated from marine red algae (Porphyra vietnamensis). The obtained silver nanoparticles showed surface plasmon resonance centered at 404 nm with average particle size measured to be 13 ± 3 nm. FTIR spectra revealed the involvement of sulfate moiety of polysaccharide for reduction of silver nitrate. The capping of anionic polysaccharide on the surface of nanoparticles was confirmed by zeta potential measurement (−35.05 mV) and is responsible for the electrostatic stability. The silver nanoparticles were highly stable at wide range of pH (2–10) and electrolyte concentration (up to 10−2 M of NaCl). The dose dependent effect of synthesized silver nanoparticles revealed strong antibacterial activity against gram negative bacteria as compared to gram positive bacteria.

Graphical AbstractFigure optionsDownload as PowerPoint slideResearch Highlights
► Green synthesis of silver nanoparticles (AgNps) using sulfated polysaccharide.
► AgNps showed surface plasmon resonance centered at 404 nm and particle size 13±3 nm.
► These nanoparticles were stable in a wide range of pH and electrolyte condition.
► AgNps showed antibacterial activity against gram negative and gram positive bacteria.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 65, Issue 6, 31 March 2011, Pages 999–1002
نویسندگان
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